Shocking Service in Closing Credit Card Account

I have been trying to cancel my Standard Bank Credit Card for the past eleven months, but have received no assistance from Standard Bank. I initially went into the Richards Bay branch (August 2020) to close this account, but was advised by the consultant to close it online. When I tried to close it online there was no function to do so on the internet or mobile apps. I have since tried calling the International helpline number, but always get an automated response telling me to call back later. I have emailed ***, ***, *** and ***. I have received responses to some of my emails asking that I send certain information for security purposes. I have done so immediately, but never receive any response after doing this. I am being billed R118 every month for an account that I am not using and have been requesting to close for 11 months. This is absolutely shocking service Standard Bank, and the fact that I am still being charged because of staff incompetencies is unacceptable Kindly resolve this matter.